CHARLESTON, South Carolina (AP) — An F-16 fighter jet and a small plane collided in midair Tuesday over South Carolina, raining down plane parts and debris.

The Federal Aviation Administration said in a statement that the fighter jet collided with a Cessna C150 around 11:00 am. The collision happened about 11 miles north of Charleston.

No other details were immediately available. It was not immediately known how many people were on the planes and whether anyone survived. It also was not immediately known if anyone was hurt on the ground.

North Charleston Fire Department spokeswoman Bianca Bourbeau said the agency has sent a chief and a marine unit to assist Berkeley County with a reported plane crash, and will send other help as needed.

The Air Force has flown F-16s since the 1970s, though very few active-duty squadrons still fly them. Many F-16s still in service in the US are assigned to Air National Guard units. However, Colonel Cindi King of the South Carolina Air National Guard said the F-16 involved in the crash did not belong to the Guard.

Berkeley County Airport manager Stacy Thomas declined to comment on the plane crash, referring questions to the FAA.